<!DOCTYPE html>
<html lang="ch_zn">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>这个是title</title>
    <script></script>
    <style>
        .div1 {
            width: 200px;
            height: 200px;
            background-color: rgb(161, 65, 65);
        }
        
        .c1 {
            width: 200px;
            height: 200px;
            background-color: rgb(100, 13, 13);
        }
        
        .b1 {
            height: 100px;
            width: 100px;
        }
        
        .p2 span {
            color: red;
        }
    </style>
</head>

<body>
    <div class="div1">div1</div>
    <div class="div2">div2</div>
    <a href="" class="c1">链接1</a>
    <a href="" class="c2">链接2</a>
    <button class="b1">button1</button>
    <button class="b2">button2</button>

    <h1>古诗欣赏</h1>
    <h2>悯农</h2>
    <p>锄禾日当午，汗滴禾下土。</p>
    <p class="p2">谁知盘中餐，粒粒皆<span>辛苦</span></p>
    君不见黄河之水天上来
    <br>
    <span>10 <sup>o</sup>C     </span>
    <address>issac@163.com</address>
    <span>issac@163.com</span>
</body>

</html>